Windows 7 Update is not working

Install the latest Windows Update Agent https://support.microsoft.com/en-us/kb/949104 

After that install this two updates,

Before running update two and three, please run this script as an administrator with right mouse click.(see attachment) 

KB3083710 https://support.microsoft.com/en-us/kb/3083710 Windows Update Client for Windows 7 October 2015,
KB3102810 https://support.microsoft.com/en-us/kb/3102810 Installing and searching for updates is slow, and high CPU usage occurs in Windows 7